The Holder,imp Bar, cataloged under National Stock Number 4420-01-483-5451, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is DC Fabricators Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-483-5451 |
| Primary Part Number | EW-402W |
| Item Name | Holder,imp Bar |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EW-2300ABITEM25 | DC Fabricators Inc (USA) |
| EW-402W PRIMARY | DC Fabricators Inc (USA) |
| Reference | Meaning |
|---|---|
| EW-2300AB REV A | D/9 Drawing number reference only DC Fabricators Inc |
NSN 4420-01-483-5451 is a Holder,imp Bar, manufactured by DC Fabricators Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-483-5451 has 2 manufacturer part numbers on file: EW-2300ABITEM25 (DC Fabricators Inc), EW-402W (DC Fabricators Inc).
Key specifications for EW-402W: Special Features: MATERIAL SPEC., ASTM A582 TYPE 303; End Item Identification: CROSS SECTIONAL ASSY 145 SQ FT 4-PASS AFT & GLD CONDENSER, WSD: NUCLEAR REACTOR BOUNDRY AREA; Material: STEEL. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.